APA (7th ed.) Citation

Lovecraft, H. P., & Derleth, A. (1971). Something about cats, and other pieces. Books for Libraries Press.

Chicago Style (17th ed.) Citation

Lovecraft, H. P., and August Derleth. Something About Cats, and Other Pieces. Plainview, N.Y.: Books for Libraries Press, 1971.

MLA (9th ed.) Citation

Lovecraft, H. P., and August Derleth. Something About Cats, and Other Pieces. Books for Libraries Press, 1971.